Perl script backspace not working for Unicode characters
Hello,
My Perl script reads input from stdin and prints it out to stdout. After I read input I use BACKSPACE to erase characters. However BACKSPACE does not work with Unicode characters that are multi-bytes. On screen the character is erased but underneath only one byte is deleted instead of all bytes of the character, which makes remaining bytes incomplete UTF-8 characters. Here's my script:
I am using bash in a Putty terminal with UTF-8 encoding. Everything on Unicode works fine in shell including BACKSPACE. It is only a problem in my Perl script. Can anyone help? Thanks.
Hello,
I've written a Perl script that prompts for asnwers to questons. At those prompts, the backspace key shows up as ^H^H.
I would like the users to have the ablility to use the backspace key. I'm running bash shell and don't otherwise have this problem.
Any help would be greatly... (4 Replies)
I have a stream of characters like "\u8BBE\u5907\u7BA1"
and i want to display it.
I tried following things already without any luck.
1) printf("%s",L("\u8BBE\u5907\u7BA1"));
2) printf("%lc",0x8BBE);
3) setlocale followed by fwide followed by wprintf
4) also changed the local manually... (3 Replies)
hi,
I have a problem with unicode chars ( chinese, japanese etc ) insertion using sqlplus prompt.
When i wrote a proc program for it i am able to create records.
But when i fore the same query on sql prompt it stores reverse ????? ..some junk.
widechar columns are mapped with NVARCHAR datatype.... (0 Replies)
I have a csv (tab delimited) file that is created by an application (that I didn't write).
Every so often it throw out a <U+FEFF> (Zero Width no break space) character at the begining of a tabbed field. The charcater is invisible to some editors, but it shows up bolded in less.
The issue is... (3 Replies)
Hi,
How do I remove the lines where special characters or Unicode characters appear?
The following query does work but I wonder if there is a better way.
cat test.txt | egrep -v '\)|#|,|&|-|\(|\\|\/|\.'
The following lines show that my query is incomplete.
Warning: The word "*Khan" is... (1 Reply)
Hi,
My program uses gl_get_line from libtecla to get user input from terminal. It works fine as long as I enter English at the terminal prompt. However, if I enter other languages, such as Chinese characters, either by typing in or cut-and-paste, the input characters get cleared from terminal... (5 Replies)
Hi ,
I have to press shift + Backspace to do backspace on my unix termminal everytime. How can i configure it to a normal backspace only.
Please help me here. PFB the contents of the stty -a :
dbtgr@hpxi017:/pocuser/C5/aimsys/dbtgr> stty -a
speed 38400 baud; line = 0;
rows = 35; columns =... (4 Replies)
Hi friends,
Hope u r doing well. It is a very strange problem that I've never faced when I used linux or freebsd. When a type a command in Solaris 10, and if I make a mistake, the backspace doesn't work, when I press the backspace key three times forexample, this is what I get, ^H ^H ^H. The same... (2 Replies)
Friends,
I observed a peculiar problem in shell.
if I set a variable using standard input and backspace was used by the user, then the variable get ^? characters embedded in the variable.
###
echo "Enter value for X="
read X
echo $X
expr $X + 1
###
If the variable is echoed, then there... (3 Replies)
Hi all,
I have a shell script that has several strings with \uxxxx characters distributed within. I would like to display these characters when I execute the script and echo the strings. I am running on zos in an sh environment. Some strings look like this:
"Chcete-li pou\u017e\u00edt" <---... (1 Reply)
Discussion started by: adam.wis
1 Replies
LEARN ABOUT OPENDARWIN
encoding
encoding(n) Tcl Built-In Commands encoding(n)
__________________________________________________________________________________________________________________________________________________NAME
encoding - Manipulate encodings
SYNOPSIS
encoding option ?arg arg ...?
_________________________________________________________________INTRODUCTION
Strings in Tcl are encoded using 16-bit Unicode characters. Different operating system interfaces or applications may generate strings in
other encodings such as Shift-JIS. The encoding command helps to bridge the gap between Unicode and these other formats.
DESCRIPTION
Performs one of several encoding related operations, depending on option. The legal options are:
encoding convertfrom ?encoding? data
Convert data to Unicode from the specified encoding. The characters in data are treated as binary data where the lower 8-bits of
each character is taken as a single byte. The resulting sequence of bytes is treated as a string in the specified encoding. If
encoding is not specified, the current system encoding is used.
encoding convertto ?encoding? string
Convert string from Unicode to the specified encoding. The result is a sequence of bytes that represents the converted string.
Each byte is stored in the lower 8-bits of a Unicode character. If encoding is not specified, the current system encoding is used.
encoding names
Returns a list containing the names of all of the encodings that are currently available.
encoding system ?encoding?
Set the system encoding to encoding. If encoding is omitted then the command returns the current system encoding. The system encod-
ing is used whenever Tcl passes strings to system calls.
EXAMPLE
It is common practice to write script files using a text editor that produces output in the euc-jp encoding, which represents the ASCII
characters as singe bytes and Japanese characters as two bytes. This makes it easy to embed literal strings that correspond to non-ASCII
characters by simply typing the strings in place in the script. However, because the source command always reads files using the current
system encoding, Tcl will only source such files correctly when the encoding used to write the file is the same. This tends not to be true
in an internationalized setting. For example, if such a file was sourced in North America (where the ISO8859-1 is normally used), each
byte in the file would be treated as a separate character that maps to the 00 page in Unicode. The resulting Tcl strings will not contain
the expected Japanese characters. Instead, they will contain a sequence of Latin-1 characters that correspond to the bytes of the original
string. The encoding command can be used to convert this string to the expected Japanese Unicode characters. For example,
set s [encoding convertfrom euc-jp "xA4xCF"]
would return the Unicode string "u306F", which is the Hiragana letter HA.
SEE ALSO Tcl_GetEncoding(3)KEYWORDS
encoding
Tcl 8.1 encoding(n)